The problem is asking for tangent circles.
Problem with the third test suite
in 3rd case,
they intersect at two points.
In geometry, tangent circles (also known as kissing circles) are circles that intersect in a single point.
The Goldbach Conjecture, Part 2
03 - Matrix Variables 6
(Linear) Recurrence Equations - Generalised Fibonacci-like sequences
Minimal Path - 03
Last non-zero digit
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